Scanner construction for a dynamic field free line in Magnetic Particle Imaging

Magnetic Particle Imaging (MPI) is a new imaging modality capable of visualizing the distribution of super-paramagnetic nanoparticles achieving high spatial and temporal resolution. Commonly, a magnetic field configuration generates a field free point (FFP) to facilitate spatial encoding. At lower particle concentrations, the signal-to-noise ratio (SNR) decreases. An enhanced spatial encoding scheme uses a field free line (FFL) and promises to improve the sensitivity by one order of magnitude. The presented work describes the manufacturing of an optimized scanner topology that realizes an FFL with excellent field quality and an air cooling device. Based on curved rectangular coils the power loss is efficiently minimized and high field quality accomplished.